Sony 1500A User Manual

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Maintenance
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To end the digital hours meter display
Press the MENU button in the menu control section.
To reset the trip values
About this operation, consult your Sony dealer.
Head Cleaning
Always use the DVM12CL (mini size) or DV12CL 
(standard size) Cleaning Cassette to clean the video and 
audio heads. You can run the cleaning cassette for 10 
seconds per cleaning operation. Follow the instructions for 
the cleaning cassette, as inappropriate use of the cleaning 
cassette can damage the heads.
To clean the heads
Insert the cleaning cassette. This automatically starts 
cleaning. You cannot operate any tape transport control 
buttons other than the EJECT button during the cleaning 
operation.
After about 10 seconds, the cleaning cassette will be 
automatically ejected.